Home / 208,015,472.40-312,023,208.60-100,520,048.40

Finding the Fourth Proportional to 208,015,472.40, 312,023,208.60 and 100,520,048.40

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Solution

The fourth proportional to 208,015,472.40, 312,023,208.60 and 100,520,048.40 is: 150,780,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,472.40 : 312,023,208.60 = 100,520,048.40 : x
  2. Step 2: Convert to fraction form
    208,015,472.40/312,023,208.60 = 100,520,048.40/x
  3. Step 3: Cross multiply
    208,015,472.40x = 312,023,208.60 × 100,520,048.40
  4. Step 4: Simplify right side
    208,015,472.40x = 31,364,588,030,395,300
  5. Step 5: Solve for x
    x = 31,364,588,030,395,300/208,015,472.40
  6. Step 6: Final answer
    x = 150,780,072.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.